Machine for shaping shoe-shanks



' No Model.) 2 sheets-sheet 2'.

. T. l?. TYLER. MAGHINE Hm sHAPINGs-Hof'; SHANKS.

No. 511,666. y Patented 1360.26.1893.

wAi NNNNNNNNNN o.

UNTTi-n STATES FnTnNT Tries@ THADDEUS FRANK TYLER, OF LYNN,MASSACHUSETTS.

MACHINE FOR SHPING SHOE-SHANKS.

SPECIFICATION forming part of Letters Patent No. 511,666, dated December26, 1893.

Application filed March 30, 1893.

To @ZZ wiz/0m t may concern:

Be it known that I, THADDEUS FRANK TY- LER, of Lynn, in the county ofEssex and State of Massachusetts, have invented certain new and usefulImprovements in Machines for Shaping Shoe-Shanks, of which the followingis a specification.`

This invention relates to a machine for shaping leather-board shanks,such as employed in the manufacture of boots and shoes.

The object of the invention is to improve upon the present method ofshaping the blanks, which consists in subjecting them to the action ofrolls.

In carrying out my invention, I provide a machine which shall mold ablank into the desired shape at one operation; and by which the Shankscan be produced at much less expense than in the old way, by reason ofthe large amount of time and labor saved.

The accompanying drawings illustrate a construction by which theinvention may be carried out.

Figure l shows a front elevation of a machine, with the die-plungerremoved. Fig. 2 shows a vertical section, taken on the line 2-2 of Fig.l. Fig. 3 shows a perspective view of a portion of the machine. Fig. tshows a horizontal section, taken on the line a-et of Fig. 3,representing the die-plunger as withdrawn. Fig. 5 shows a similarseotion, representing the die-plunger advanced. Figs. 6 and 7 showdetail sectional Views to be referred to hereinafter.

The same letters of reference indicate the same parts in all the gures.

In t-he drawings, the reference letter ct designates the stationary bedof the machine, upon the upper side of which is erected a rigid standarda. This standard is slotted vertically, and provided with arearwardlyextending arm a2, supporting a rock-shaft as, on which isiixedan arm a4, connected at its outer end with `a pitman, which is indicatedin broken lines in Fig. 2 and will be connected with some suitablerotary machine element, such asacrank. An armi) is loosely mounted onthe rook-shaft a3, and extends through the slot in the standard a', andengages a pin b of a follower c fitted to slide in guide-ways c on thestandard a. A spring b2 connects a projection on the arm b with astationary part Serial No. 468,267. (No model.)

of the machine, and acts to drawthe follower downward. The stroke of thefollower may be adjusted by means of a set-screw b4,which is supportedin an arm b5 fixed on the shaft d3, the arm b resting upon the saidset-screw. It will be obvious that a reciprocating motion will beimparted to the follower by the mechanism described.

The follower is composed of two members, one of which, c, engages theslide-way c', and, at the end of its downward stroke, abuts a blockcomposed of two wedges d and d', which may be adjusted tothe stroke ofthe follower. The other member 0f the follower is in the form of a platec2, which is ixedly secured to the first-named member, and extends overthe front face of the machine-bed a, and between the latter and arectangular frame c fastened to the said bed. The plate c2 is arrangedto reciprocate across the opening of the frame e, and the blanks are fedfrom a chute e into said opening and under the follower, one by one,when the latter is at the upper end of its stroke.

Adjustable plates fare fastened to theframe e at the sides and topthereof, and are provided with iianges whichprojectinto the opening ofsaid frame. By means of these plates, the feeding opening may beadjusted to different-sized blanks.

Laterally-adjustable strips g are fastened on the front of themaohine-bed,and serve as guides for the blank after it has beenintroduced under the follower.

Immediately below the frame e a lateral sliding plate 7L is mounted, ateach side. Each of these sliding plates has a portion h', which projectsover the guide-Way down which the blank passes, the plate having adouble thickness to form this guide-way, as seen in Figs. 4E to 7. Theprojecting portions h are beveled at their upper edges, to facilitatethe entrance of the blanks behind them, and in order to prevent auupward movement of the blank after being carried down by the follower, apair of light spring lingers h2 are fastened to the projecting portions7L', and extend over the beveled edges thereof and partly over theguide-way, so that the bla'nk willdisplace them, as it is moved down bythe follower, and the said fingers, springing back into place after theblank has passed, will pre- ICO bed, the tension of these springsbeingadjusted by means of screws 7c', engagingfheads k2 on the plates andagainst which the springs bear. kLock-nuts 7a3 are employed to hold theadj usting-screws at any desired position.

yA female die m is countersunk in the front face ofthe machine-bed, andits cavity fm isl curved'in the direction of its length, and itssidesandf'ends are beveled.

A' die-plunger 'n' is mounted in any suitable manner, so as to bereciprocated toward andi away from the front of the machine, and thisplunger carries the male die fn', which is curved in the vdirection ofits length to conform'to'the curvature of the female die, and isfor-lned'with a cavity similar to that of they female die, said cavityhaving beveled sides and ends.

The sliding plates h carry blocks h4, whose inner sides are beveled, andprojections ont1 the sides of the diep-which, in the present in`-stance, are screw-heads hr-encounter thee beveled sides of the blocks h4as the die-plunger "approachesthe female die, and the platest harethereby moved outward so as to permit the passage of the die-plunger.provided for locking these plates in their outer positions until thedie-plunger is withdrawn, and, in the present instance, this is@accompllshedbymeans of sliding pins o, car-` riedv bythe plates andactuated by springs o which project them into depressions o2inthe"machine-bed when the sliding plates are moved outward in the manneralready de-E scribed.'4 Said sliding pins have laterall 'portions 03,extending over the upper side of thedie-plunger, and the latter isprovided with projections shown in the present instance as studs o6,which encounter the lateral portions ofthe vsliding pins upon thewithdrawal of the plunger', and thereby disengage the sliding pins fromthe depressions o2 and permit thelslidingplates to move inward again to'their normal positions. The construction and operation o f'these slidingpins are best illustrated'in Fig. 7. f'

Sliding. ystuds p project from the faces of the'lnale yand female dies,and are pressed outwardby springs p', inserted behind them.' henthedie-plunger approaches-the female die, the'studs engage opposite sidesof the blank" and Ihold it in position as it is compressed in the dies.l

The operation of the lnachine,briey stated,

Means are'y is as follows: The blanks, aspq (seeFig. 3), are set up onledge in the chute e', and are pressed forward by any'suitable means, sothat `each time the follower aseen ds a blank will be thrust into theguide-way below it, and, upon the follower descending, it will encounterthe said blank and carry it down behind the projecting portions of theplates h and into a position directly in front of the cavity of thefemale'die.' As the die-plunger 'a advances, the sliding plates h arepushed outward in a manner hereinbefore described, and the male die ncomes against the blankand presses it intothe'cavityof'the female die,the springpressed studs p preventing the blank from shifting. Thelcurvature of the diesifin the direction of their length-imparts thedesired curvature to the shank, and at the sametime the edges oftheblank-are compressed by the beveled sides of the dieandabevcl thusimpartedv to the edges of. the blank.v Thedieplunger is withdrawn, andthe finished shank is removed in any suitable way. A Adjustablegage-arms a" are arrangedat the lower endof the feedingguide-way, forthe blankrt restupon in its4 proper position linfront of'ftlie cavity of'the-femaledie In the present-instance, these arms are pivotedat pointsfrto the plates h, and are adj usted by Vmeans of slots r2 in saidplates and set-screws r3 extending through said-slots'andengagingtthearms a". It will be seen that-,witha machine of this kind,`leatherboardshanks maybe.

turned out Vwith'great rapidity and-atl agreat savingof time and labor,as compared with the old methods I i f It is evident that!theinvention-'may be embodied in different forms fromthat here shown;Ihereforel amnotlimited to theparticular form in which-Ihave/chosen-toillustrate the invention. Y Havingthus describedmyinvention, what I claim as new, and desire to secure -b'y LettersPatent, is-y v y 1. A moldingllnachine, comprisingl-inits construction aguide-wayiintewhicli? the blanks are `fed'one by one, a-followerinsaid-guide Way, laterally-movable guide-fplatesi'projecting overopposite sides ofV the vguide-way `and behind which-the blank-is carriedbythefollower, and a die-plunger'reciprocating;at

right angles to the 'guidewayI and-adapted to spread the guide-platesas-itadvancesfupon the blank. l j

d 2. Amolding machine, compr-isingin its construction a guide-way'intowhich theblanks are fed one by one, a follower in said1 guideway,laterally-movable 'guide-plates proj eeting over opposite sides oftheguide-way and behind whichfthe blank is:l carried by thefollower, saidguide-platesbeing-yieldinglyheld against the surface -at each side oftheguideway, and adie-plunger reciproeatifngfat right angles to theguide-way and! adapted' to spread the guide-'plates-'as it advancesuponthe blanks.'

IOO

-IIO

IZO

3. Anioldingmachine, comprising inits construction a guide-way for theblanks, a feeding follower in said guide-way, guide-plates yieldinglyheld in a position where they project over the guide-way and providedwith beveled projections, and a die-plu nger having lateral projectionsadapted to encounter the beveled projections on the guide-plates as saidplunger approaches a blank, as and for the purpose described.

4. Amoldin g machine,oornprising in its construction a guide-way for theblanks, a feeding follower in said guide-way, guide-plates yieldinglyheld in a position where they project over the guide-Way and carryingsliding spring-actuated pins adapted to engage depressions in astationary part of the machine, and a die-plunger adapted to spread saidguide-plates as it approaches ablank, and pro- TIIADDEUS FRANK TYLER.

Witnesses:

NELLIE HAMMOND, IRA B. KEITH.

